If you do have radioactive waste, i.e. any country with nuclear power, you probably have a really, really good plan to store that waste for millions of years. No? Well then you might be interested in transmuting the waste into different form that has a half life of 25 minutes. Using a high-powered laser, gold and some physics I don’t understand iodine can be transmuted making the material safer. If the process could be scaled up and cheaper it could pose an alternative to Yucca Mountain.
British scientists have “transmuted” iodine-129 into iodine-128 with a high-powered laser. Now, dropping one neutron might not seem like a big deal, but the half-life of iodine-129 is 15 million years while the half-life of iodine 128 is 25 minutes.